Internal services

Fingerprint and keys

IMPORTANT! Please check fingerprints and keys before connecting to internal services.

We use Let's Encrypt certificates which should be accepted by all clients.

Reading mail

You can use POP3 or IMAP4 to read mail.

IMAP Subfolders should use "/" as a separator. Preferably folders should be stored alongside INBOX, not in INBOX. See below under Filtering.

Push mail with IMAP IDLE and server-side search is supported.

Specifics:

• Host: mail.hack.org
• Encrypted connection (TLS): Required, either by STARTTLS or going directly to TLS ports (IMAP 993, POP 995).
• Username: user@domain
• Password: What you got from us. Make sure it's set to PLAIN or "Normal Password", not "Encrypted Password".

Note that even if you have SSH access to our shell box and use mail clients like Alpine or Mutt you still need to use IMAP or POP. The mail server is on a different box.

Sending mail

To send mail, use ESMTP with TLS.

• Host: mail.hack.org
• Encrypted connection (TLS): Required, either by STARTTLS on submission port 587 or going directly to TLS port 465.
• Username and password: Same as when reading mail.

Filtering mail

Postfix names

We support postfix names on your e-mail address. You can add +whatever to your address. An address such as foo+bar@example.com will be delivered to foo@example.com. This might help when filtering incoming messages.

Sieve filtering language

We support the Sieve mail filtering language and the ManageSieve protocol to manage the filters.

Specifics:

• Host: mail.hack.org
• Use the ManageSieve protocol.
• STARTTLS required.
• Username and password: Same as IMAP/POP/SMTP.

Some mail clients has ManageSieve functionality either built in or as a plugin.

Please store your folders alongside INBOX not under INBOX, that is:

• INBOX
• personal
• futurec
• postmaster

and not

• INBOX
• INBOX/personal
• INBOX/futurec
• INBOX/postmaster

Shell

Use shellbox.hack.org for generic shell use, IRC clients, et cetera. SSH fingerprints in keys.

Web pages

Everything under public_www in your home directory on shellbox will show up at:

https://hack.org/~username/

within 15 minutes. Note the "~" in front of your username.

We support only static data.

Gemini capsule

We have a Gemini server on:

gemini://gem.hack.org/

If you want to host something there, get in touch with MC.

Gemini (no relation to the AI thing) is a lightweight Internet protocol. It's heavier than Gopher but lighter than HTTP(S), especially if combined with all other web technologies. The name makes sense if Gopher is Project Mercury and the web is the Apollo program.

Here's a longer intro in MC's blog.

Backups

Nightly backups of:

• web pages
• mail
• shellbox home directories

Contact MC if you need something.

Last updated: <2025-08-06 09:09:51 CEST>